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Extraction of rye bran by supercritical carbon dioxide: Influence of temperature, CO2, and cosolvent flow rates

da Cruz Francisco, José LU ; Danielsson, Bengt LU ; Kozubek, A and Dey, Estera LU (2005) In Journal of Agricultural and Food Chemistry 53(19). p.7432-7437
Abstract
Process parameter optimization for the supercritical CO2 extraction of rye bran to obtain alkylresorcinols (AR) was studied by carrying out a two-level fractional design experiment. Four parameters, temperature, CO2 flow rate, cosolvent percentage, and extraction time, presumed to influence the extraction process, were analyzed. A tentative fractionation of the crude extract was also carried out and is discussed. The best extracts were achieved when the CO2 flow rate and extraction time or temperature and cosolvent addition were kept high. It was found that temperature increase was not statistically significant within the range of the study performed, and the extraction time was thus the most important factor. A preliminary fractionation... (More)
Process parameter optimization for the supercritical CO2 extraction of rye bran to obtain alkylresorcinols (AR) was studied by carrying out a two-level fractional design experiment. Four parameters, temperature, CO2 flow rate, cosolvent percentage, and extraction time, presumed to influence the extraction process, were analyzed. A tentative fractionation of the crude extract was also carried out and is discussed. The best extracts were achieved when the CO2 flow rate and extraction time or temperature and cosolvent addition were kept high. It was found that temperature increase was not statistically significant within the range of the study performed, and the extraction time was thus the most important factor. A preliminary fractionation process in two cyclone separators yielded two fractions, one rich in AR components with higher molecular weights and the other rich in AR components with low molecular weight. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Agricultural and Food Chemistry
volume
53
issue
19
pages
7432 - 7437
publisher
The American Chemical Society
external identifiers
  • pmid:16159169
  • wos:000231895900012
  • scopus:26244445569
ISSN
0021-8561
DOI
10.1021/jf058053t
language
English
LU publication?
yes
id
4457a9d2-1c25-4a55-bc52-a121d3818b00 (old id 152605)
date added to LUP
2007-07-16 09:26:44
date last changed
2017-01-01 04:32:30
@article{4457a9d2-1c25-4a55-bc52-a121d3818b00,
  abstract     = {Process parameter optimization for the supercritical CO2 extraction of rye bran to obtain alkylresorcinols (AR) was studied by carrying out a two-level fractional design experiment. Four parameters, temperature, CO2 flow rate, cosolvent percentage, and extraction time, presumed to influence the extraction process, were analyzed. A tentative fractionation of the crude extract was also carried out and is discussed. The best extracts were achieved when the CO2 flow rate and extraction time or temperature and cosolvent addition were kept high. It was found that temperature increase was not statistically significant within the range of the study performed, and the extraction time was thus the most important factor. A preliminary fractionation process in two cyclone separators yielded two fractions, one rich in AR components with higher molecular weights and the other rich in AR components with low molecular weight.},
  author       = {da Cruz Francisco, José and Danielsson, Bengt and Kozubek, A and Dey, Estera},
  issn         = {0021-8561},
  language     = {eng},
  number       = {19},
  pages        = {7432--7437},
  publisher    = {The American Chemical Society},
  series       = {Journal of Agricultural and Food Chemistry},
  title        = {Extraction of rye bran by supercritical carbon dioxide: Influence of temperature, CO2, and cosolvent flow rates},
  url          = {http://dx.doi.org/10.1021/jf058053t},
  volume       = {53},
  year         = {2005},
}